Best material strength is measured by its resistance to being indented or penetrated by its surface. The hardness test is very helpful in determining the best material to use since it gives a hardness value, which shows how easily a material can be machined and how well it will wear. Its definition is “resistance to indentation,” and its measurement is “permanent depth of the indentation.” Simply put, the smaller the indentation produced by a particular indenter and a fixed force (load), the harder the material is.
This straightforward indentation test can be used to gauge the hardness of a range of best materials. The test consists of putting a 5 or 10 mm diameter tungsten carbide ball on the flat surface of a metal sample to apply a certain load, often between 500 kg and 3000 kg, for a predetermined amount of time (10-30 seconds).
The difference in depth penetration between two loads is represented by the Rockwell number. Rockwell and Superficial Rockwell are the two different forms of Rockwell. The minor and main loads that are applied to the specimen determine how the two differ from one another. A diamond cone or a hardened ball may be employed as the indenter, primarily depending on the properties of the substance being examined.
The polished rhombohedral shape of the Knoop indenter has incorporated longitudinal angles of 172° 30′ and transverse angles of 130° 0′. The indenter’s narrowness makes it the perfect tool for testing specimens with coatings and severe hardness gradients. For measuring the hardness of hard and brittle materials, Knoop is a preferable option.
Hardness testing can be done on-site utilizing a portable digital hardness tester that uses a rebound-type hardness tester. When cutting the sample is not an option, like with huge objects or in-situ, this is especially helpful.
Standards we tested to
|Sr No||Discipline: Hardness Test||Test Methods|
|1||Vickers Hardness (HV10)||ASTM E92: 2017, IS 1501-1: 2020, ISO 6507-1: 2018|
|2||Vickers Hardness (HV5)||IS 1501-1: 2020, ISO 6507-1: 2018, ASTM E92: 2017|
|3||Vickers Hardness (HV0.2)||IS 1501-1: 2020, ISO 6507-1: 2018|
|4||Vickers Hardness (HV1)||ASTM E92: 2017, ASTM E 384: 2022, IS 1501-1: 2020, ISO 6507-1: 2017|
|5||Vickers Hardness (HV30)||ISO 6507-1: 2020, ASTM E92: 2017|
|6||Vickers Hardness Test (HV0.2)||ASTM E384: 2022|
|7||Vickers Hardness Test (HV30)||IS 1501-1: 2020|
|8||Hardness Brinell (10/500)||ASTM A 370: 2022, IS 1500-1: 2019, ASTM E10: 2018|
|9||Brinell Hardness ( 5/750)||ISO 6506-1: 2014, ASTM A 370: 2022, IS 1500(PART 1): 2019, ASTM E 10: 2018|
|10||Brinell Hardness (10/3000)||ASTM A370: 2022, ASTM E10: 2018, IS 1500-1: 2019, ISO 6506-1: 2014|
|11||Rockwell Hardness Test Scale A||ASTM E 18: 2022, ASTM A 370: 2022, ISO 6508-1: 2016, IS 1586-1: 2018|
|12||Rockwell Hardness Test Scale B||ASTM E18: 2022, ASTM A370: 2022, IS 1586-1: 2018, ISO 6508-1: 2016|
|13||Rockwell Hardness Test Scale C||ASTM E 18: 2022, ASTM A 370: 2022, IS 1586-1: 2018, ISO 6508-1: 2016|